ICDcodes.org
FY2027

J03 vs J36

J03 and J36 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.

The official note, declared on J03
peritonsillar abscess (J36)
J03

Acute tonsillitis

Not billable
Chapter 10
Diseases of the respiratory system
Section
J00-J06
J36

Peritonsillar abscess

Billable
Chapter 10
Diseases of the respiratory system
Section
J30-J39
Use when the record says
  • abscess of tonsil
  • peritonsillar cellulitis
  • quinsy
Indexed under
  • Peritonsillitis
  • Quinsy (gangrenous)
  • Abscess › circumtonsillar (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
  • Abscess › intratonsillar (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
  • Abscess › peritonsillar (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)

Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027